000
FZPN03 KNHC 182138
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU AUG 18 2011

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT WHICH IS THE AVERAGE 
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE 
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

PAN PAN

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W

SYNOPSIS VALID 1800 UTC THU AUG 18.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 19.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 20.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE GREG AT 18.8N 112.6W 980 MB AT 2100 UTC AUG 18 MOVING 
W-NW OR 285 DEG AT 12 KT.  MAXIMUM SUSTAINED WIND 75 GUSTS 90 
KT.  TROPICAL STORM FORCE WIND WITHIN 75 NM N SEMICIRCLE...65 NM 
SE QUADRANT AND 50 NM SW QUADRANT.  SEAS 12 FT OR GREATER WITHIN 
150 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW QUADRANT...AND 
80 NM NW QUADRANT WITH SEAS TO 29 FT.
.24 HOUR FORECAST  HURRICANE GREG NEAR 19.1N 116.9W.  MAXIMUM 
SUSTAINED WIND 70 GUSTS 85 KT.  LITTLE CHANGE IN RADIUS OF 
TROPICAL STORM FORCE WIND AND SEAS 12 FT OR GREATER. 
.48 HOUR FORECAST  TROPICAL STORM GREG NEAR 18.9N 120.7W.  
MAXIMUM SUSTAINED WIND 50 GUSTS 60 KT.  TROPICAL STORM FORCE 
WINDS WITHIN 60 NM N SEMICIRCLE AND 50 NM S SEMICIRCLE.  SEAS 12 
FT OR GREATER WITHIN 150 NM N AND 75 NM S SEMICIRCLES WITH SEAS 
TO 25 FT.
.72 HOUR FORECAST  TROPICAL STORM GREG NEAR 18.5N 123.0W.  
MAXIMUM SUSTAINED WIND 35 GUSTS 45 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST  TROPICAL DEPRESSION GREG NEAR 18.5N 125.5W. 
MAXIMUM SUSTAINED WIND 25 GUSTS 35 KT.
.120 HOUR FORECAST  POST-TROPICAL REMNANT LOW GREG NEAR 18.0N 
128.0W.  MAXIMUM SUSTAINED WIND 25 GUSTS 35 KT.

.SYNOPSIS AND FORECAST.

.EXCEPT AS NOTED IN GREG WARNING...WITHIN 180 NM NE AND 90 NM SW 
SEMICIRCLES  WINDS TO 33 KT.  SEAS TO 12 FT. 
.24 HOUR FORECAST  EXCEPT AS NOTED IN GREG WARNING...WITHIN 210 
NM N AND 120 NM S SEMICIRCLES  WINDS TO 33 KT.  SEAS TO 12 FT. 
.48 HOUR FORECAST  EXCEPT AS NOTED IN GREG WARNING...WITHIN 180 
NM N AND 120 NM S SEMICIRCLES  WINDS TO 33 KT.  SEAS TO 12 FT. 

.WITHIN 210 NM SE OF LINE FROM 08N122W TO 13N114W  S TO SW WINDS 
20 TO 25 KT.  SEAS 8 TO 10 FT IN SW SWELL.
.24 HOUR FORECAST  FROM 09N TO 15N BETWEEN 114W AND 125W
S TO SW WINDS 20 TO 25 KT.  SEAS 8 TO 10 FT.
.48 HOUR FORECAST  FROM 09N TO 15N BETWEEN 117W AND 129W
S TO SW WINDS 20 TO 25 KT.  SEAS 8 TO 9 FT.

.S OF 08N FROM 105W TO 125W  WINDS LESS THAN 20 KT.
SEAS TO 8 FT IN S SWELL.
.24 HOUR FORECAST  S OF 09N FROM 105W TO 125W 
WINDS LESS THAN 20 KT.  SEAS TO 8 FT IN S SWELL.
.48 HOUR FORECAST  S OF 06N FROM 104W TO 126W  WINDS LESS THAN 
20 KT.  SEAS TO 8 FT IN S SWELL.
 
.REMAINDER OF AREA  WINDS LESS THAN 20 KT.  SEAS LESS THAN 8 FT.

CONVECTION VALID AS OF 2100 UTC THU AUG 18...
.HURRICANE GREG...NUMEROUS MODERATE TO STRONG WITHIN 90 NM N AND 
180 NM S SEMICIRCLE. 

NUMEROUS MODERATE TO STRONG WITHIN 90 NM OF LINE FROM 08N122W TO 
13N114W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...FROM 10N85W TO 
10N100W...THEN FROM 16N116W TO 13N132W.  SCATTERED MODERATE TO 
ISOLATED STRONG WITHIN 120 NM N OF AXIS FROM 117W TO 127W. 
ISOLATED TO SCATTERED MODERATE FROM 05N TO 08N BETWEEN 80W AND 
89W AND FROM 10N TO 13N BETWEEN 96W AND 104W.

$$
.FORECASTER WALLY BARNES.  NATIONAL HURRICANE CENTER.